About

Built by Abhirup Datta K.,
for CS students

Deltora started as a personal tool to make Theory of Computation less painful. It is now a full toolkit used by students preparing for exams, GATE, and research interviews.

Mission

TOC should be understood,
not memorized

Theory of Computation is one of the most abstract subjects in computer science. Most students memorize definitions and hope for the best. That is backwards.

When you can see a DFA trace a string step by step, watch a TM head move across a tape, or generate a pumping lemma proof from scratch — you understand the idea, not just the formula. That is what Deltora is built to do.

Pumping Lemma Proof — Generated

STEP 1 — Assume L is regular. By PL, ∃ p ≥ 1.

STEP 2 — Choose w = aᵖbᵖ ∈ L, |w| ≥ p. ✓

STEP 4 — Since |xy|≤p, y = aᵙ (k ≥ 1)

STEP 7 — L = {aⁿbⁿ} is NOT regular. QED. ∋

Team

A one-person studio.

Deltora is designed, built, and shipped end-to-end by a single person. From the first wireframe to the working algorithms.

PROJECT LEAD · SOLO BUILDER

Abhirup Datta K.

Designer Developer Founder

Designed and built every layer of Deltora — the brand, the marketing site, and every interactive tool from DFA simulation to Turing Machine tape animation. CS undergrad at RKMVCC, lead of Magistics, and obsessed with building things that actually work: clean UI, correct algorithms, and zero friction for students who just need to solve a problem.

100%

Designed

100%

Developed

Person

Principles

What we believe

🔍

Clarity over cleverness

Every output is explained in plain steps. We do not just show the answer — we show the reasoning that leads to it.

⚡

Zero friction

No login. No install. No loading screen. Open the app and start working within seconds.

📐

Textbook-accurate

Every algorithm matches standard definitions — Sipser, Hopcroft-Ullman, Aho. Built for the real exam, not a simplified version of it.

🆕

Free for now

Core tools are free right now. We believe students should not have to pay to understand a subject they are already paying tuition for.

Story

How Deltora grew

The first tool

A single DFA simulator built to debug a college assignment. Console output only.

Visual canvas added

States and transitions became draggable. SVG diagrams auto-generated from any automaton definition.

NFA, PDA, and TM added

Expanded to cover all major automata. Stack visualization and tape animation shipped.

Proof generators added

Pumping lemma proof generation and Arden’s theorem solver made the toolkit usable for exam preparation.

Deltora v1.1 — now

8 tools, 3 input modes, step-by-step for everything. Full product site. Built for GATE 2027, university exams, and research interviews.

Built by Abhirup Datta K.,for CS students

TOC should be understood,not memorized